Servers and applications
CVE-2026-11856
Successfully using libcurl to do a transfer to a specific HTTP origin (`hostA`) with **Digest** authentication and then changing the origin to a different one (`hostB`) for a second transfer, reusing the same handle, makes libcurl wrongly pass on the `Authorization:` header field meant for `hostA`, to `hostB`.
- Severity
- Critical 9.8
- Published
- 3 Jul 2026
- Last changed
- 15 Sept 2026
- Added to UpHeron
- 21 Oct 2026
- Fixed in
- 8.21.0
- Sources
- NVD
Affected software
| Software | Affected versions |
|---|---|
curlServers and applications · cpe:a:haxx:curl |
|